Irajatherium is an extinct genus of cynodonts, known only of the type species Irajatherium hernandezi.

[2] It is named in honor of Irajá Damiani Pinto.

Irajatherium hernandezi is a species known only by a humerus, a femur, two jaws and an upper arch incomplete, has the upper canine teeth after pills across and the post-mandibular canines with a more developed central cusp, followed by three smaller ones.

It was collected in the Candelária Formation in the municipality of Faxinal do Soturno in the Paraná Basin of southeastern Brazil.

This cynodont-related article is a stub.